Nanoscale Depth Profiling of Residual Stresses Due to Fine Surface Finishing

Surface Residual Stresses in Dry Turning of 0.45% C Steel

Residual stresses in a surface layer determine many exploitation characteristics of machined surface. Depending on their kind and the type of applied loading, the influence of residual stresses can be negative or positive. Tensile residual stresses usually exert highly detrimental impact on several functional aspects such as strength, fatigue life, corrosion, wear resistance, etc., whereas comp...

Residual Stresses and Fatigue of Surface Treated Welied Specimens

An e x p e r i m e n t a l program was under t aken t o e v a l u a t e t h e e f f e c t of induced compress ive s t r e s s e s due t o v a r i o u s peen ing and t h e r m a l t r e a t m e n t s on t h e f a t i g u e l i f e of a b u t t welded medium s t r e n g t h s t e e l (Cb-50). R e s i d u a l s t r e s s e s were measured u s i n g x-ray d i f f r a c t i o n and t h e r e s u l t...

Fracture of Ceramics with Near Surface Gradient Residual Stresses

The fracture toughness and strength of ceramics can be improved with respect to monolithic ceramics by developing graded materials as laminates composed of periodic alternating layers of one material separated by layers of a second material. The second layer must contain residual compressive stresses which are induced during densification because of differential thermal contraction of the layer...

On the shell theory on the nanoscale with surface stresses

Surface Workhardening and Residual Stresses Induced by Micro Cutting Processes

X-ray diffraction, optical microscopy and microhardness testing have been used to study properties which develop in micro-cut AISI 1045 steel. The influence of the ploughing effect on residual stresses, surface deformation and work hardening, and the tool quality were investigated. Tensile residual stresses, caused by the heat generated in the material during the cutting process, were observed ...